844 



ERICACEAE. XLIII. RHODODENDRON. 



par. lond. t. 80. Gmel. sib. 4. t. 54. R. officinale, Salisb. 

 p. 121. t. 54. Branches decumbent, beset with rusty stipula- 

 formed scales. Flowers handsome, large, drooping, revolute, 

 rather irregular, yellow. Stigma 5-lobed. The plant and its 

 effects were first described by Gmelin and Steller, who men- 

 tion it as used in Siberia for the cure of rheumatism : with us it 

 is used in decoction as a substitute for Colchicum. (F. 141.) 



reborn-flowered Rhododendron. Fl. June, July. Clt. 1796. 

 Shrub |- to 1 foot. 



9 R. CAUCA'SICUM (Pall. fl. ross. 1. p. 46. t. 30.) leaves ovate- 

 oblong, clothed with rusty tomentum beneath, rugged and green 

 above ; peduncles hairy ; bracteas elongated, tomentose ; ova- 

 rium downy. % . H. Native of Caucasus, on high rocks, near 

 the limits of perpetual snow. Sims, hot. mag. 1145. Root 

 creeping. Branches procumbent. Flowers purple or white, 

 disposed in umbellate corymbs. Corollas rotate, with wavy 

 rounded segments. 



Caucasian Rhododendron. Fl. Aug. Clt. 1803. Shrub 1 

 foot. 



10 R. PUNCTA'TUM (Andr. bot. rep. 36. Vent. eels. t. 15.) 

 leaves oval-lanceolate, acute at both ends, glabrous, beset with 

 rusty resinous dots beneath ; pedicels short ; calycine teeth 

 short ; segments of corolla ovate, a little undulated. Tj . H. 

 Native of Carolina, on the mountains, particularly on the head 

 waters of the Savannah River. Sims, bot. mag. .2285. R. ferru- 

 gineum, var. minus, Pers. ench. 1. p. 478. R. minus, Michx. fl. 

 bor. amer. 1. p. 258. R. punctatum, var. minus, Wats, dendr. 

 brit. 162. A. An elegant shrub. Flowers pink, disposed in 

 umbellate corymbs. Corollas funnel-shaped. Capsules elongated. 



Var. ft, majus (Ker. bot. reg. 37.) leaves and flowers larger. 

 Z>otted-leaved Rhododendron. Fl. July, Aug. Clt. 1786. 

 Shrub 4 feet. 



11 R. FERRUGI'NEUM (Lin. spec. 562.) leaves oblong, attenu- 

 ated at both ends, glabrous, shining and green above, but thickly 

 beset with rusty dots beneath ; calycine segments dentately cili- 

 ated, fj . H. Native of the Alps of Europe, as of Switzer- 

 land, Austria, Savoy, Dauphiny, and Piedmont, where this and 

 R. hirsutum terminate ligneous vegetation, and furnish the shep- 

 herds with their only fuel. Jacq. obs. 1. p. 26. t. 16. fl. austr. 3. 

 t. 255. Lodd. bot. cab. 65. Lob. icon. 366. Leaves like those 

 of the box-tree, when young ciliated with a few hairs at bottom. 

 Flowers of a beautiful rose-colour or scarlet, disposed in umbel- 

 late corymbs, marked with ash-coloured or yellow dots. Co- 

 rollas funnel-shaped. Filaments hairy at bottom. 



Var. ft, Jlore-albo; flowers white. 



Rusty-leaved Rhododendron. Fl. May, July. Clt. 1752. 

 Shrub 1 foot. 



12 R. HiRsuVuM (Lin. spec. 562.) leaves ovate-lanceolate or 

 elliptic, acutish, ciliated with rusty hairs on the margins, glabrous 

 above, dotted and hairy beneath ; calycine segments fringed, 

 bearded. ^ H. Native of the Alps of Europe, as of Switzer- 

 land, Austria, Styria, Dauphiny, &c. Jacq. austr. 1. t. 98. 

 Sims, bot. 1853. Lodd. bot. cab. 479. Lob. icon. 468. Very 

 like R. ferrugineum. Flowers pale red or scarlet, disposed 

 in umbellate corymbs. Corollas funnel-shaped. 



Var. ft, variegdtum; leaves edged with yellow. 

 Hairy Rhododendron. Fl. May, July. Clt. 1656. Shrub 

 1 to 2 feet. 



13 R. SETOSUM (D. Don, in wern. soc. trans. 3. p. 408. prod, 

 fl. nep. 152.) branchlets beset with bristles ; leaves oval, mu- 

 cronate, bristly on the margins and under surfaces ; pedicels 

 beset with glandular hairs ; calycine segments rounded, coloured, 

 naked, crenulated. Jj . F. Native of Nipaul, on Gosaingsthan. 

 A small, stiff, much-branched shrub. Leaves an inch long. 

 Flowers purple, size of those of R. Dauricum, disposed in um- 

 bellate corymbs. Calyx purple. Filaments bearded at the base. 

 Stigma capitate. 



Bristly Rhododendron. Fl. ? Clt. 1825. Shrub j to 1 ft. 



SECT. II. BobRAM (the name of the first species in Nipaul). 

 Limb of calyx 5-lobed. Corolla campanulate. Stamens 10. 

 Ovarium 8 or 10-celled. Leaves coriaceous, evergreen. Species 

 all natives of India. 



14 R. ARBOREUM (Smith, exot. bot. t. 6.) leaves lanceolate, 

 acute, silvery beneath, tapering to the base ; peduncles and ca- 

 lyxes woolly ; segments of corolla 2-lobed, with crenulately 

 curled margins ; capsule 10-celled, tomentose. Tj . F. Native 

 of Nipaul, on the mountains at Narainhetty, where it is called 

 Booram by the natives. Hook. exot. fl. 168. Lindl. bot. reg. 

 t. 896. Sweet, fl. gard. 3. t. 250. R. purpureum, Hamilt. mss. 

 Tree very showy when in blossom. Leaves 4-6 inches long. 

 Flowers large, scarlet, dotted with black on the upper lip inside, 

 disposed in dense heads. Stigma capitate, crenulated. 



Tree Rhododendron. Fl. March, May. Clt. 1820. Tree 

 20 feet. 



15 R. A'LBUM (Hamilt. mss. Sweet, fl. gard. 1. 148.) leaves lan- 

 ceolate, wrinkled and dark green above, but of a rusty cinnamon 

 colour beneath; alternate filaments toothed, fj . F. Native of Ni- 

 paul. R. arboreum y, floribus niveis, D. Don, prod. fl. nep. p. 1 54. 

 Wall. pi. asiat. var. 2. t. 123. Flowers white, spotted with pur- 

 ple on the upper lip. Dr. Wallich considers this and R. arboreum 

 to be only varieties of each other. 



JF/w'te- flowered Rhododendron. Fl. March, May. Clt. 1818. 

 Tree 10 feet. 



16 R. CINNAMOMEUM (Wall. cat. no. 760.) leaves lanceolate, 

 acute, obtuse at the base, clothed with intense rusty tomentum 

 beneath ; limb of calyx short, callous, 5-lobed ; ovarium tomen- 

 tose, 10-celled. tj . F. Native of Nipaul. Very nearly allied 

 to R. arboreum, and hardly distinct from that species. Leaves 

 3-4 inches long. Corolla with wavy cloven segments, appa- 

 rently white. Capsule an inch long. Perhaps the same as R. 

 album. 



Cinnamon-coloured-leaved Rhododendron. Fl. June. Clt. 

 1817. Tree. 



17 R. BARBA'TUM (Wall. cat. no. 757.) leaves oblong-lanceo- 

 late, acute, obtuse at the base, yellowish beneath ; calycine seg- 

 ments dilated, membranous; ovarium 10-celled, glandular, his- 

 pid ; petioles and mid-rib of leaves bristly ; filaments glabrous, 

 toothless. Pj . F. Native of Nipaul. Habit of R. arboreum. 

 Leaves a span long. Corolla dark red, with broad rounded 

 cloven segments. Ovarium thickly beset with glanduliferous 

 bristles. 



Bearded Rhododendron. Tree. 



18 R.? LINEARIFOLIUM (Poir. suppl.exSpreng.syst. 2. p. 

 293.) leaves linear, coriaceous, obtuse,, with revolute edges, 

 clothed with rusty down beneath ; flowers corymbose ; calyx 

 minute, obtuse, velvety. ^ . F. Native of the East Indies. 



Linear-leaved Rhododendron. Shrub. 



19 R. CAMPANBLA'TUM (D. Don, in wern. mem. 3. p. 409. 

 prod. fl. nep. 153.) leaves elliptic-oblong, mucronate, rusty be- 

 neath, rather cordate at the base ; segments of corolla flat, 

 emarginate ; ovarium 6-celled, glabrous. fj . F. Native of 

 Nipaul, on Gosaingsthan, a high mountain to the north of the 

 valley. Lodd. bot. cab. 1944. Sweet, fl..gard. n. s. t. 241. 

 Under surfaces of leaves clothed with fine scaly pubescence, at 

 first of a purplish hue, afterwards changing to nearly white, and 

 finally to a deep ferruginous brown. Flowers copious, disposed 

 in corymbose clusters. Pedicels glabrous. Bracteas fringed. 

 Corollas large, pale pink, changing to white, having the upper 

 lip marked with irregular purple spots. Filaments bearded at 

 the base. This species surpasses all others in the size of its 

 flowers, except one found in Java by Dr. Horsefield. 



Campanulate-ftov/ered. Rhododendron. Fl. April. Clt. 1817. 

 Shrub 3 to 5 feet. 



